Samsung may have checked off almost all the must-haves in smartphone screens. Well, almost all of them. It still has to deliver a now-trendy 90 Hz or 120 Hz refresh rate and a true in-screen camera that doesn't have a visible hole. That may still happen next year with the Galaxy S11 but there's no certainty of that. What may be certain, at least based on this very early leak, is that it could be taller than any Samsung phone so far, almost but not quite as tall as the Sony Xperia 1.